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| 砷化氢-钼蓝光度法测定环境样品中砷 |
| Determination of Arsenicin EnvironmentalSamples by AsH 3 -molybdenumblue Spectrophotometry |
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| DOI： |
| 中文关键词: 砷 砷化氢 钼蓝 分光光度法 |
| 英文关键词: Arsenic AsH 3 Molybdenumblue Spectrophotometry |
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| 摘要点击次数: 1025 |
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| 中文摘要: |
| 介绍了用砷化氢-钼蓝光度法测定水质、土壤和沉积物样品中砷, 对测定条件中的砷化氢反应时间、显色酸度、碘-碘化钾溶液用量、钼酸铵用量和干扰物质等进行了试验。 方法检测限为7μ g/L, 平均回收率在97% ~ 105% 之间, 相对标准差为2. 5%, 摩尔吸收系数为2.4×10 4 。 |
| 英文摘要: |
| Thepaperintroducedthedeterminationofarsenicin water,soiland depositby AsH 3 - molybdenumbluespectrophotometry.T he conditions were tested for reaction time of AsH 3 ,acidity of coloring,amount of I 2 -KI solution,amount of (NH 4 ) 2 MoO 4 andtheinterference.The detectionlimit was 7 L g/L,averagerecovery was 97% ~ 105%,relativestandard deviation was2.5%,andthe mole absorption coefficient was2.4×10 4 . |
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